02-08-2020, 01:32 PM
Rosecrans1 Wrote:I know manufacturer and bullet manufacturer info on MV can be "off" but for reference, the #15 Speer manual gives their minimum 8208XBR load of 22.9 grains under a 120 Gold Dot at 2210fps. I would imagine that ladder study is reading way under what was actually fired.
It's possible but I belive it's because his barrel is making way under pressure for charge compared too book data he was following.
I belive he he started over at 25 and work up to 27.6 in 2 tenths he will see much more in line speeds for the grendel with that combo.